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From: "Nuno Sá" <noname.nuno@gmail.com>
To: kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: i2c possible patch
Date: Wed, 22 Jul 2020 11:49:05 +0100	[thread overview]
Message-ID: <60679735286c92124b44355df3b7d1230c26e4ea.camel@gmail.com> (raw)

Hi all,

I was looking at the i2c core code and I stumbled in a condition that
looks like some "legacy" thing. While I'm not sure about this, this
mailing list feels like a good place to get some feedback. The
condition in question is this

https://elixir.bootlin.com/linux/latest/source/drivers/i2c/i2c-core-base.c#L356

So, my first question is: Can we actually get into `i2c_device_probe()`
without `i2c_device_match()` being called first? If not, it looks that
this condition could just be removed...

If we can get there without `i2c_device_match()`, I can see a problem
in the condition if we just use of_id_table in ACPI.
`i2c_acpi_match_device()` just calls `acpi_match_device()` whereas I
think `acpi_driver_match_device()` should be used if we want to take
of_id_table into account. Does this really look like an issue or Am I
missing something?


- Nuno Sá


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                 reply	other threads:[~2020-07-22 10:52 UTC|newest]

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